Infinite Money Version 2
This method is quite easier then finding Dorian's house and clicking "A" one hundred thousand times. Go to Kavach on a horse with your most powerful sword equiped. (Most powerfull as in most money or rarest sword, and the camp of who is left from the seige of Kavach) Talk to Sigrid while on your horse with the sword equiped. Now sell your sword to her, just because she is so nice you will get the money for it, but she won't get the sword. Do this as many times as you please to get as much money as you want.
We have more cheats and tips for this game here, The Elder Scrolls IV: Oblivion cheats
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